[OpenLayers-Users] a calculate problem with my UTM layer

[zhuke198791]

hello guys , recently , I plan to transplant my flash map to openlayers , and
my old map is based on UTM . I have read some examples and I create a file
in the layer folder , inherits from the TileCache Object . 

like this:
OpenLayers.Layer.Terrafly = OpenLayers.Class(OpenLayers.Layer.TileCache, {
....
},

because my map has its own source data , so I should rewrite the getURL()
function of the layer,  the problem is my source image is 400X400 , so ,what
size should I asign to the tileSize , and how about the serverResolutions ? 

I have asign some number to the new layer based on my old map , but When I
drag the map , some repeat tile  or wrong order tile will be displayed ,
that means when calculate which tile will be displayed ,some error occurs .

you can visit
http://131.94.129.57:8080/OpenLayers-2.12/myDemos/terrafly.html and you can
easily see the wrong order of the tiles 

my layer's source code :
http://131.94.129.57:8080/OpenLayers-2.12/lib/OpenLayers/Layer/Terrafly.js

I just do not know what is the tileSize and resolution should be given to
the layer I create , that could make my map display correctly . 
<http://osgeo-org.1560.n6.nabble.com/file/n5035362/worng.jpg> 

Thanks for helping me . 





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